Improved boring apparatus



` UNITED STATES PATENT OFFICE.

SAMUEL CARY, OF OENTREVILLE, LOUISIANA.

IMPROVED BORING APPARATUS.

Specification forming part of Letters Patent No. 55,058. dated August 7, 1866.

To @ZZ whom it may concern Be it known that I, SAMUEL GARY, of Oentreville, in the parish of St. Marys, in the State of Louisiana, have invented certain new and useful Improvements in Boring Apparatus 4for post-holes, wells, and `for other purposes; and the following is a full, clear, and exact description of the same, reference being made to the accompanying drawings, making a part of this specification, in Which- Figure 1 represents a perspective view of the boring apparatus. Fig. 2 is a perpendicular view ofthe same. Fig. 3 shows a section through the tube-shank with the conepoint spring-valve for admitting air under the auger to relieve the vacuum when being withdrawn.

The object of my invention'is to be ablev to raise the auger easily when boring in the earth and water by admitting a supply of air `through the shank of the auger to any desired depth, thereby relieving the vacuum.

My invention consists in the construction and application of the center-point springvalve, in combination with the double spurlip cutter-blades, semicircular scoop, and tubeshank for coupling to and extending to any desired depth, as hereinafter more fully described. Y

To enable others skilled in the art to make and use my invention, I will describe it more fully, referring to the drawings and to the letters of reference marked thereon.

I make the shank A of .my boring apparatus out of wrought-iron water or gas pipe, into the lower end of which I t a screw, d.,

`with an open-sided pipe, b, into which the spindle or rod c of thecenter-point O is fitted so as to slide, it being held up against the bottom of the screw aby a spiral spring, d, around the rod c in the open space b, so as to entirely close up the bottom ofthe tube or shank A while boring.

Onto the outside of the lower end of the shank A an arm-socket, D, is screwed. To the arms o o are fastened the steel cutting-disks E E', they having lipsff'to out the circle of the bore smooth. On `one of the cuttingdisks, E', I have a semicircular scoop F, to extend up the side of the bore to any desired height,the top being braced to theshank A by a socket, g, with arms h ij.

For the purpose of boring by hand, I have a wood handle, B, int-o which is tted a screwsocket, 7c, of metal, to screw onto the top `of the tube-auger shaft A. In boring wells other tubes may be screwed on as lthe shaft is sunk, and the operation continued by the same handle, or power machinery maybe applied.

It is well known that in boring the earth with augers of similady-constructed bits there is a great difculty in raising them out of the 4 shaft or bore, theearth and water' forming a packing, so that no air can possibly get under the loosened mass. By my center-point valve and hollow shaft, as above described, the vac- `uum is entirely relieved, and no diiculty is experienced in removing the bit and loosened mass.

]E[aving` thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The combination and application ot' the center-point sprin g-valve, with the double spurlip cutter-blades, semicircular scoop, and tubular shank, for coupling to for any desired I depth,substantially as herein described, for

the purposes speciiied.

Sworn and subscribed to on this 10th day ofJuly, A. D. 1866.`

sAMnEL GARY.

Witnesses Y l EDM. F. BROWN, J. B. WOODRUFF. 

